618231317 has 8 divisors (see below), whose sum is σ = 675462432. Its totient is φ = 561171600.

The previous prime is 618231307. The next prime is 618231319. The reversal of 618231317 is 713132816.

618231317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-618231317 is a prime.

It is a super-2 number, since 2×618231317² = 764419922639108978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618231319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35243 + ... + 49784.

It is an arithmetic number, because the mean of its divisors is an integer number (84432804).

Almost surely, 2^618231317 is an apocalyptic number.

It is an amenable number.

618231317 is a deficient number, since it is larger than the sum of its proper divisors (57231115).

618231317 is a wasteful number, since it uses less digits than its factorization.

618231317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85699.

The product of its digits is 6048, while the sum is 32.

The square root of 618231317 is about 24864.2578212180. The cubic root of 618231317 is about 851.8902877127.

The spelling of 618231317 in words is "six hundred eighteen million, two hundred thirty-one thousand, three hundred seventeen".